* {
    margin: 0;
    padding: 0;
}
body {
    margin-top: 70px!important;
}
ul {
    list-style-type: none!important; 
}
ul.navbar-right {
    margin-right: 0; 
}

div.footer {
    margin-top: 3em;
    background-color: #eee;
    color: #555;
}
div.website-info {
    text-align: center;
    padding-top: 2em;
    padding-bottom: 1.5em;
}
div.website-info p {
    margin-bottom: 0;
}

.page-bottom{
    position:absolute;  /*或者fixed*/
    bottom:0;
    width: 100%;
}